TT-7132 Fix variable shadowing in nameInUse callback in ProjectsScreen

[gtryus]

The local t variable inside the nameInUse callback shadowed the outer t = cardStrings localization variable, making the code ambiguous and error-prone.

• ProjectsScreen.tsx: Renamed trimmed-name local from t → trimmedName in nameInUse

// Before — shadows outer `const t = cardStrings`
const t = newName.trim();
if (t === '') return false;
return projects.some(p => (p?.attributes?.name || '').trim().toLowerCase() === t.toLowerCase());

// After
const trimmedName = newName.trim();
if (trimmedName === '') return false;
return projects.some(p => (p?.attributes?.name || '').trim().toLowerCase() === trimmedName.toLowerCase());

[Copilot]

Pull request overview

Improves team/project name validation in dialogs by trimming whitespace before duplicate checks and commit, reducing accidental duplicates caused by leading/trailing spaces.

Changes:

• Normalize (trim) team and project names before validation and when committing changes.
• Update duplicate-name checks (nameInUse) to be more consistent with trimmed comparisons and empty input handling.
• Adjust helper text and primary action disabled-state logic to use trimmed values.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 4 comments.

File	Description
src/renderer/src/routes/ProjectsScreen.tsx	Trims project name before duplicate detection in the add-project flow.
src/renderer/src/components/Team/TeamDialog.tsx	Trims team name on commit; updates duplicate check and button/helper logic to use trimmed values.
src/renderer/src/components/Team/ProjectDialog/ProjectDialog.tsx	Trims project name on commit; disables primary action based on trimmed name and trimmed duplicate check.
src/renderer/src/components/Team/AddCard.tsx	Updates duplicate check to compare trimmed project names.

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